Improved bed-bottom



UNITED STATES PATENLOEFICE.

t JOHN FLINN, OF PHILADELPHIA, PENNSYLVANIA.

| MP'R'ovE D BED- BoTTo M.

Specication forming part of Letters Patent No. 56,740, dated July 31,1866.

` nia, have invented a new and useful Improvement in the Bed-BottomSpiral Springs; and I do hereby declare that the iollowing is a full,

' clear, and exact description of the construction and operation of thesame, reference being had to the accompanying drawings, making a part ofthis specification, in Which- Figurelis an elevation, and Fig.2asectional plane view, of the said improved spring apy plied to abed-bottom slat, like letters of reference indicating the same partswhen in both figures.

The object of my improvement is to produce a more reliable, steady, andsubstantial means ofadjustably fastening and supporting the well-knownwire spiral springs on the wooden slats of a bed-bottom and my inventionconsists in so continuing' and bending the wire of the usual bottom coilof the spring as to cause it to extend from the middle of the width ofthe upper side of the slat, when the spring is centrally appliedthereto, across to and downward over and' below the one side edge of thelatter, and form thereat two or more small vertical spiral-spring coils,and thence half-Way across the under side of the said slat back to apoint directly under theA main spring, where, by a short upward turn,its extreme end is formed into a blunt vertical point, which can bereadily indented by hand sufciently into the wood of the slat to keepthe spring in place vertically thereon, and also admit of its beingremoved or shifted with the greatest facility, as occasion may at anytime render desirable.

In the drawings, A is the slat of a bed-bottom; B O, the wire spiralspring, b' being its bottom coil or base; b2, the extension thereofforming the small vertical spring-coils c c and the bluntpointedvertical end c2.

The main spring B C is made in the usual tapering spiral form, generallyof coppered wire, and of the size shown in the drawings; butinstead ofturning the free end of the Wire of the bottom coil, b', inward to thecenter, and then directly downward, so as to produce a short verticalstem, which will enter a ver tical hole made for it in the slat, asheretofore, I continue the wire of the bottom coil, b', tangentiallyfrom the same, so that when y the said spring B C is in proper positionupon the slat A it will extend in a straight line to the sideof the saidslat. Ithen bend it downward over the edge of the slat A to the lowerside of the latter and form thereat two or more vertical spiral coils,c' c', and then I bend it tangentially from the said coils c c -back tothe axis of the main spring B O, when, turning it up vertically, I cutit off and make the blunt-pointed stem c?, as represented in thedrawings.

It will be seen, therefore, that the spring B C is provided with aspringclamp, Which is applied to the slat U by simply springing it onfrom the one side edge of the latter, and then pressing the shortpointed stem c2, by hand, slightly into the wood ofthe under side of theslat, as represented in Fig. 1.

It will also be seen that this fastening for a bed-bottom spring is animprovement, as it will be more reliable, steady, and substantial in itssupport of the spring B C than the old one, and that at4 the same timeit will admit of being removed or shifted at pleasure with the greatestfacility; and moreover, While the bottom' or smaller end of the springwill be held in place rmly by the spring-clamp, as described, its 4upperor broader end is left entirely free from and independent of any of theother springs in the bed-bottom.

I am aware that an eye has been formed at the upper or broader end of aconical or conoidal spring by banding the Wire so as to produce thereata iiat loop, through which a thin slat can be introduced so as toconnect the said upper or broad end with other like springs in a series,While the Wire of the smaller end of the spring is formed into astraight vertical stem, whereby the spring can be supported in a holemade in the base or foundation slat, as in Manuels patent of December12, i865.` Therefore I do not desire to claim anything found in the saidpatent but,

Having thus fully described my improved spring for bed-bottoms, what Iclaim as new therein of my invention, and desire to secure by LettersPatent, is confined to the following, viz:

In combination with a bed-bottom, spiral spring B O, extending andbending the wire of the bottom coil, b', of the same, so as to producethe spring-clamp b b2 c e c2, substantially in the manner described andset forth, for the purposes specified.

' JOHN FLINN.

Witnesses:

BENJ. MoRrsoN, B. F. SHATTUCK.

